Hey there!
The subordinating conjunction in the sentence is though.
Hope it helped!
A metaphor is used to compare two things without using the words 'as' or 'like' in the sentence.
Example: He is such a pig - that sentence compares two things the boy and the pig and no words such are mentioned with 'as or like' therefore it is a metaphor
You have to go through the article and identify the main point that the author is trying to get across. sometimes the main idea is the. first sentence in an article